Computerized 3‐D reconstruction of two “double teeth”

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<jats:p><jats:bold>Abstract</jats:bold> “Double teeth” is a root malformation in the dentition and the purpose of this study was to reconstruct three‐dimensionally the external and internal morphology of two “double teeth”. The first set of “double teeth” was formed by the conjunction of a mandibular molar and a premolar, and the second by a conjunction of a maxillary molar and a supernumerary tooth. The process of 3‐D reconstruction included serial cross‐sectioning, photographs of the sections, digitization of the photographs, extraction of the boundaries of interest for each section, surface representation using triangulation and, finally, surface rendering using photorealistic effects. The resulting three‐dimensional representations of the two teeth helped us visualize their external and internal anatomy. The results showed: a) in the first case, fusion of the radical and coronal dentin, as well as fusion of the pulp chambers; and b) in the second case, fusion only of the radical dentin and the pulp chambers.</jats:p>

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